Replaced by the Criminal Procedure (Identification) Act 2022, which widened what may be taken and who may order it. The 1920 Act is given for the history of the power only and is NOT current law — do not cite it for the position today.
The sections below are the ones the LL.B. papers examine on this Act, with the unit that covers each and the cases decided on it. The official text is on India Code ↗.